CVE WatchOct 16, 2026

CVE-2026-109165

TDuck survey form through 6.0 contains a broken access control vulnerability that allows authenticated users to add fields to other users' f

CVSS

4.3

Medium

EPSS

0.2%

p14

KEV

—

Exploit Today

0-100

Published: Oct 12, 2026 · Last modified: Oct 16, 2026 · CWE-639

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-10-132026-10-23

Technical description

TDuck survey form through 6.0 contains a broken access control vulnerability that allows authenticated users to add fields to other users' forms via POST /user/form/item/batch/create. Attackers can submit an array whose first element references their own form and later elements reference a victim's formKey, injecting attacker-chosen fields onto the victim's public fill page.

Official references

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